Oil cup



F. EIDEN Sept. 28 1926.

OIL CUP Filed Dec.

INVENTOR FRANK. EIDEN.

-ATTORNEY Patented ept. 28, 1925,

iJi iiTED STAT FRANK ETDEN, OF BEDDING, CALIFORNIA.

OIL CUP.

Application file'd'Dece'mber 18, 1925. Serial No. 76,252.

The invention relates to certain new and useful improvements in oil cups and has for its object to provide certain new and useful improvements in the type of oil cup illustrated in my application for-patent Serial No. 19,518, filed March 30, 1925.

In its more detailed nature the invention seeks to provide an improved oil cup closure cap adaptable for use in connection wi h oil cups of the type stated, the said cap being of a simple spring hinged nature in which is provided means for overcoming the tendency of oil leakage when oil is forced up through the central tube of the cup by air pressure, the said cap being provided with means for causing all oil thus directed to be positively returned into the oil cup chamber without possibility of leakage.

lVith the above and other objects in view the invention further resides in the novel details of construction, combination and arrangement of parts, all of which will be first fully described in the following detailed description, then be particularly pointed out in the app-ended claim and illustrated in the accompanying drawing in which: Figure 1 is an enlarged central vertical section of an oil cup embodying my invention, the closure cap being shown as closed in full lines and open in dotted lines.

Figure 2 is a plan view of the oil cup embodying the invention.

In the drawing, in which like reference numerals indicate like parts in all of the figures, 1 indicates the oil cup proper which includes the main oil receiving chamber 2, an externally threaded neck '3 whereby the same may be mounted for use, and an in ternally threaded oil discharge passage 4.

The passage 1 is counterbored as at 5 to provide an oil well, and a tube 6, threaded at its other end, is provided and is adapted to be threaded into the passage 4: in the man ner illustrated in Figure 1 of the drawing. the counterbore 5 providing an annular oi well surrounding the lower end of the said tube, and for providing communication from the said well through the wall of the tube and into the discharge passage the said tube is provided with apertures 7 as indicated. The upper end 8 of the tube 6 projects approximately to the top of the oil cup and is notched to accommodate a screw driver or other suitable tool by the use of which the tube may be screwed home.

' A disk 9 is secured to the tube in any suitable manner to move longitudinally therewith and a filter packer 10 is interposed between the said disk and the bottom of the oil cup above the well 5' and apertures 7. j

Thus, oil the cup around the tube 6 is filter-fed through the packer 10, well 5 and holes 7 into and through the discharge passage 4 to the part or parts to be lubricated. As de scribed in my previous application referred to, by rotating the tube 6 the density of the packer 10 may be varied and the feeding of oil from the main chamber through the passage 4 thus regulated to a nicety. As also described in that application, oil may be freely injected directly to the parts to be lubricated through the upper .end of the tube, an unobstructed passage all the way through that tube being provided.

The parts thus far described are substantially the same as those described in my previous application referred to and no claim is made to that structure, per so.

As described, my improved oil cup is especially adaptable to use upon shock absorbers or like devices where the oil passages are subjected to air pressure and suction, the filter-feeding devices preventing an overcharge of oil by suction and the free passage through the central tube providing for free air escape without forcefully ejecting oil from the cup, as would be the case when using the ordinary type of oil cup.

It has been found, however, that even with my improved arrangement it is possible at remote times that air under pressure would be forced through the tube 6 just as a quantity of oil was trickling therethrough, with the result that the oil particles would be forced upwardly through the tube and at times leak out laterally from under the valve closure cap. 7

Therefore, in order to positively overcome all tendency to leak oil by air pressure ac- 1 tion and to provide a simple closure cap whereby free access to the central tube and main oil chamber 2 may be had I provide a flat closure cap 11 having down-turned edges just outsideof the wall of the cup 1 and being spring-hinge connected as at 12 to one side wall of the said cup to ermit full opening and exposure of the wiole of the main oil chamber 2 in the manner indicated in dotted lines in Figure 1 of the drawing.

A collar 13 is secured to the inside of the filled into the main chamberof cap 11' centrally thereof so that the lower annular edge 14 thereof will extend slightly below and concentrically around the upper end of the tube 6. Thus, any oil forcefully ejected from the top end 01: the tube 6 will engage the underside of the cap 11 withi the collar 13 and be guided downwardly to drip off the annular edge 14 back into the main chamber of the cup.

From the foregoing description, taken in connection with the accompanying-drawing, it is thought that the novel details of construction, manner of use and the advantages of my invention will be readily apparent to those skilled in 'theart to which the invention relates.

What I claim is: 7

Inan O-ll cup of the class descrlbed, where- 1n is embodied acasing, a filter-feed means in the cas1ng, anda free passage 011 tube passing through the filter feed means and 11 having its upper end extended approximately to the top of the cup; a closure cap spring hinge'connected at one side to the cup and which has a downturned flange surrounding the cup and an annular collar extended downwardly from the underside of the cap and surrounding the upper end of the tube, the lower edge thereof projecting slightly below the said tube end.

FRANK EIDEN. 

